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C. W. LUCAS. HOLDER FOR- LIGHTING FIXTURES.

APPLICATION mu) JAN. 21. 1916.

1,316,250. Patented Sept. 16, 1919.

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THB COLUMIIA rLANuuRAPH 60-. WASHINGTON. D. c.

* STATES PATENT :QFEIOE.

CLARENCE W. LUGAS, 0F DECATUR, ILLINOIS, 'ASSIGNOR-TO-TIIE PI-IOENIXGLASS COMPANY, OF PITTSBURGH, PENNsYLvANlA l-k CORPORATION :OF WEST VIR-GINIA.

IIO-LDER FOR LIGI-ITING FIXTURES.

Specification of Letters Patent. -Patnted Sept -1B,'1919 Applicationfiled January 27, 1916. Serial No. 74,520.

' To all whom it may concern:

ing-Fixtures, of 3vhich the ffol-lowing is a specification. v

Myinvention relates to that class of devices which are designed tosupport an inverted shade at the bottom and a reflector at the top.

Devices of this'charaeter, with whichI am familiar, have a harp-likestructure which extends from the lower shade-support to the upper,and'is secured to the lower by means of rivets or is soldered. Inasmuch asthe material of which the upper shade is formed is very thin, there is acontinual danger of the rivets pulling out, and it isalso difficult tohold the fixture in a-vertical position. These devices also fail toprovide'suflicient means for ventilation, with the result that when thenew, so called, nitrogen light is used,-they become over-heated.

My invention has for its ObJGCt' to provide a structure which willoverco'i'ne the foregoing objections, and which will provide a "holderwhich will be verystrong'and rigid,

which will have ample ventllatlon, and

which w'ill'provide means to prevent the unscrewing of the uppershade'clamping means, except byuna'nual operation.

Other ob ects er the 1nvent1on-may-appear in the hereinafter containedclaims and description.

'My means of obtaining the foregoing objects-may be morerea'di'lyunderstood by having'reference to the accompanyingdrawings whi'eh arehereunto annexed and are a part'of this-specification,- in which:

Figure lisa vertical elevation with the securing rings removed.

"Fig. 2 is atop or plan view of the same, the top being open. 7

"Fig. 3 is a perspective View of the upper lockmg ring.

Fig. 4: is a perspective view of the lower locking ring.

Fig. 5 isfan assembled viewypart of the holder being broken away.

Similar reference numerals refer to similar partsthroughout the entiredescription.

As shown-in the drawings, the holder is provided'with a lower shadeholding means 5, which has secured thereto, two upwardly extendingmembers hereinafter referred to "as the harp 6. :The *bolt projectsdownwardly from the center of the shade-clamping member, and carries acupor shell '8, designed to engage the'lo'wer shade. It is secured intoposition by means of 'a knob 9, mounted uponthe bolt 7. The harp 6extends outwardly and has-secured thereto an upper shade holding meansI0, which 'is formed with aperipheral flange-12, and has two slots 13out or formed in the sides thereof, the upper edge of which isprovidedwvith serrations or teeth 11. A groove or recess 14 is formed inthe VGIlZlCfll"'-W2].ll"0f the'upper shade holder, adjacent the'upperend of the slot 13.

In the devices with which I am familiar,

the harp terminates -atthis pointfbut in my device, I extend theends-laupwar'dly until they engage a cap 16which is formedwith ahemispherical top portion 17, a horizontal shoulder 18 and a verticalcylindrical por tion. The upper ends of the harp 'are riveted totheverticalcylindrical-portion,

and the ends 20 'project upwardly through the horizontal shoulder, andthese ends are slottedas more clearly seen in the detailed View.AsegmentQl of the cap 16is provided-with a hinge 22 which is-secure'dbya pin or pivot 23 to the vertical shoulder on the remaining portion,permitting it to swing horizontally and-outwardly *wh'en it 'is'desiredto attaclr' or detach the holder to an electric light sobket.

Two 'vertical "grooves 24 are formed in the vertical cylindrical portionofthe ca-p too-permit the collar 25 which clamps the upper shade inposition to bepassed over it.

This collar is provided with two'inwardly projecting lugs '26 whichare'fitt-edtoand coincide with the grooves'la and'24 and are adapted toengage theserrations-in the slots 13 *formed in 'the upper shade holdingmember 10. A ring '2'? having an inturned flange 28, fits over" the cap16,=and is provided with two slots29diametrically opposite to eachother,-"which taper toward-one end, the larger end 30 fitting to-andcoinciding with the upper ends 2O of the-harp 6, the two sides oftheslots"beingadapted to engage the grooves cut adjacent the-ends 20 ofthe harp 6, so that by placing the ring over the cap, the ends 20 of theharp 6, project through these openings 30, when rotation of the ring 27will cause the sides of the slots 29, to enter the grooves adjacent theends 20 of the harp 6, and the farther the ring 27 is twisted, thetighter this engagement will be, which thus has the effect not only oflocking the pivoted segment 21 into position, but also lessens thepossibility of the harp structure 6 being drawn out of the holder.

It will be obvious from the foregoing description that there is a widespace open to the atmosphere between the upper shade holding means andthe cap, which space amply provides for ventilating and cooling theholder.

As shown in Fig. 5, the lower shade 31 is held in position between thecup or shell 8, and the lower shade holding means 5, the knob 9 servingto clamp them firmly together; the upper shade 32 is then placed on theupper shade holding means resting 011 the peripheral flange 12. Thecollar 25 is passed over the cap 16, the vertical grooves 21 permittingthe lugs 26 to pass freely. The lugs 26 are then placed through thegrooves or recesses ll into the inclined slots 13, when the rotation ofthe collar 25 *auses it to clamp and hold the upper shade 32, the teethor serrations preventing its working loose. The ring 27 is then laced 0nthe wire 33 above the electric soc :et 34 and the segment 21 is opened,and the socket can be placed in position without the necessity ofremoving the shades. The segment 21 is then closed and the ring 27 isplaced over the cap 16 with the openings 30 in position to register withthe ends 20 of the harp 6. These permit the ring to drop over the saidends 20 and bring the edges of theslots 29 in register with the groovescut adjacent the ends 20 of the harp 6, when the rotation of the ringcauses the edges to enter the said grooves, and this has the effect ofbinding the ring securely on the cap, besides strengthening theresistance of the harp 6, to its being pulled downwardly or loosened.

Having described my invention what I regard as .new and desire to secureby Letters Patent, is:

1. In a holder for lighting fixtures, the combination with lower shadeholding means, of a frame extending upwardly therefrom, an upper shadeholding means having a peripheral flange secured to said frame, therebeing inclined slots formed in said shade holding means, teeth cut onthe edge of said slots, a collar, lugs thereon which fit the said slotsand engage said teeth, a cap spaced from said upper shade holding means,a segment of said cap being hinged thereto and swinging horizontally,said cap having a shoulder and a vertical cylindrical portion, the endsof the frame passing through said shoulder and the vertical portion ofthe cap being fastened to said frame, there being grooves formed in saidframe adjacent the ends thereof, a ring having an inturned flange, therebeing tapered slots in said flange the larger ends of which correspondin size to the ends of the frame, the edges of the slots being adaptedto engage the grooves adjacent the ends of the frame.

2. In a holder for lighting fixtures, the combination with lower shadeholding means, of a frame extending upwardly therefrom, an upper shadeholding means having a peripheral flange secured to said frame, therebeing inclined slots formed in said shade holding means, teeth out onthe edge of said slots, a collar, lugs thereon which fit the said slotsand engage said teeth, a cap spaced from said upper shade holding means,there being grooves formed in said cap to permit said collar to passover the cap, a segment of said cap being hinged thereto, and swinginghorizontally, said cap having a shoulder and a vertical cylindricalportion, the ends of the frame passing through said shoulder and thevertical portion of the cap being fastened to said frame, there beinggrooves formed in said frame adjacent the ends thereof, a ring having aninturned flange, there being tapered slots in said flange the largerends of which correspond in size to the ends of the frame, the edges ofthe slots being adapted to engage the grooves adjacent the ends of theframe.

3. In a holder for lighting fixtures, the combination with lower shadeholding means, of a frame extending upwardly therefrom, an upper shadeholding means having a peripheral flange secured to said frame, therebeing inclined slots formed in said shade holding means, and groovesleading to said slots, teeth out on the edge of said slots, a collar,lugs thereon which fit the said slots and engage said teeth, a capspaced from said upper shade holding means, there being grooves formedin said cap to permit said collar to pass over the cap, a segment ofsaid cap being hinged thereto and swinging horizontally, said cap havinga shoulder and a vertical cylindrical portion, the ends of the framepassing through said shoulder and the vertical portion of the cap beingfastened to said frame, there being grooves formed in said frameadjacent the ends thereof, a ring having an inturned flange, there beingtapered slots in said flange the larger ends of which correspond in sizeto the ends of the frame, the edges of the slots being adapted to engagethe grooves adjacent the ends of the frame.

4. In a holder for lighting fixtures, the combination with lower shadeholding means; of a frame extending upwardly therefrom, two spacedcircular members thereon, the lower one furnishing a holder for theupper shade, the upper circular member having a segment hinged theretoand adapted to swing horizontally, and means to hold said segment in aclosed position, said means engaging and holding the upper ends of saidframe.

5. In a holder for lighting fixtures, the combination with lower shadeholding means, of a frame extending upwardly therefrom, two spacedcircular members thereon, the lower one furnishing a holder for theupper shade, the upper circular member having a segment hinged theretoand adapted to swing horizontally, means to hold said segment in aclosed position, said means engaging and holding the upper ends of saidframe, and means to clamp said shade to the shade support.

6. In a holder for lighting fixtures, the combination with lower shadeholding means, of a frame extending upwardly therefrom, two spacedcircular members thereon, the lower one furnishing a holder for theupper shade, the upper circular memher having a segment hinged theretoand adapted to swing horizontally, means to hold said segment in aclosed position, said means engaging and holding the upper ends of saidframe, means to clamp said shade to the shade support, and means to locksaid clamping means in position.

7. In a holder for lighting fixtures, the combination with lower shadeholding means, of a frame extending upwardly therefrom, anupper shadeholding ineans having a peripheral flange secured to said frame, a capspaced from said upper shade holding means, a segment of said cap beinghinged thereto and swinging horizontally, said cap having a shoulder anda vertical cylindrical portion, the ends of the frame passing throughsaid shoulder and the vertical portion of the cap being fastened to saidframe, there being grooves formed in said frame adjacent the endsthereof, a ring having an inturned flange, there being tapered slots insaid flange the larger ends of which correspond in size to the ends ofthe frame, the edges of the slots being adapted to engage the groovesadjacent the ends of the frame.

8. In a holder for lighting fixtures, the combination with lower shadeholding means, of a frame extending upwardly therefrom, an upper shadeholding means having a peripheral flange secured to said frame, therebeing inclined slots formed in said shade holding means, teeth out onthe edge of said slots, a collar, lugs thereon on which fit the saidslots and engage said teeth, a member at the top of said frame, inspaced relation to the shade holding means, a" segment hinged theretoand adapted to swing horizontally, and means to hold said segment in aclosed position, said means engaging and holding the upper ends of saidframe.

In testimony whereof I have signed the foregoing specification.

CLARENCE W. LUCAS.

Copies of thin patent may be obtained or five cents each, by addressingthe "Commissioner of Patentu, Washington, D. O.

